Typical operating characteristics (continued) – Rainbow Electronics MAX5099 User Manual
Page 10
MAX5099
Dual, 2.2MHz, Automotive Synchronous Buck
Converter with 80V Load-Dump Protection
10
______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V+ = V
IN_HIGH
= 14V, unless otherwise noted. V+ = V
IN_HIGH
means that N1 is shorted externally.)
V+ TO IN_HIGH CLAMP VOLTAGE
vs. GATE SINK CURRENT
MAX5099 toc29
GATE SINK CURRENT (mA)
V+ TO IN_HIGH CLAMP VOLTAGE (V)
8
6
4
2
1
2
3
4
5
0
0
10
T
A
= +25
°C
T
A
= +135
°C
T
A
= +125
°C
T
A
= +85
°C
T
A
= -40
°C
(V
GATE
- V) vs. V
IN_HIGH
MAX5099 toc30
V
IN_HIGH
(V)
(V
GATE
- V) (V)
15.5
12.0
8.5
2
4
6
8
10
0
5.0
19.0
T
A
= +25
°C
T
A
= +135
°C
T
A
= +125
°C
T
A
= +85
°C
T
A
= -40
°C
ON/OFF = IN_HIGH
SYSTEM TURN-ON FROM BATTERY
MAX5099 toc31
10ms/div
V
L
10V/div
V+
10V/div
GATE
10V/div
IN_HIGH
10V/div
V
IN
10V/div
0V
0V
0V
0V
0V
SYSTEM TURN-OFF FROM BATTERY
MAX5099 toc32
10ms/div
V
L
10V/div
V+
10V/div
GATE
10V/div
IN_HIGH
10V/div
V
IN
10V/div
0V
0V
0V
0V
0V
SYSTEM LOAD DUMP
MAX5099 toc33
100ms/div
V
OUT1
AC-COUPLED
100mV/div
V+
10V/div
GATE
10V/div
IN_HIGH
10V/div
0V
0V
0V
0V
0V
V
IN
50V/div
IN_HIGH CLAMP VOLTAGE
vs. CLAMP CURRENT
MAX5099 toc28
CLAMP CURRENT (mA)
IN_HIGH CLAMP VOLTAGE (V)
40
30
20
10
20.0
20.1
20.2
20.3
19.9
0
50
T
A
= +25
°C
T
A
= +135
°C
T
A
= +125
°C
T
A
= +85
°C
T
A
= -40
°C